Frostbite forces Ranulph Fiennes to quit Antarctic expedition

(CNN) -- Frostbite has forced British adventurer Ranulph Fiennes to quit his attempt to cross the Antarctic in winter -- a challenge his team regarded as the coldest journey on earth.

Tony Medniuk, the chairman of the expedition, said Fiennes' hand was frostbitten when he had to fix a loose ski binding with his bare hands in temperatures of around minus 30 degrees Celsius (minus 22 degrees Fahrenheit).

"It is the last remaining great polar challenge," Medniuk told CNN.

"He was going to be on skis, in specially adapted clothing to withstand the temperatures, so that he would be the first person to actually ski across the Antarctic in winter."

Fiennes' evacuation has been delayed by a blizzard but he is expected to be transported by skidoo to the Princess Elisabeth Station about 70 kilometers (44 miles) away from his current position. From there he will be flown to Novo to get a connecting flight to Cape Town.

Ranulph Fiennes on Antarctic adventure

The other five members of the expedition will continue the journey without Fiennes as their leader, Medniuk said.

Read: Veteran explorer sets off on "The Coldest Journey."

They plan to travel almost 4,000 kilometers (2,485 miles) through icy wilderness mostly in complete darkness and in temperatures as low as minus 90 degrees Celsius. The journey is expected to take six months.

A Norwegian team recently completed a winter crossing of the Arctic but this is the first attempt to traverse the Antarctic.

Fiennes has previously been the first person to reach both the North and South Poles by land and the first to cross Antarctica on foot.

The team set sail from London in December and were building a base camp and supply depot inland from Crown Bay when Fiennes developed the case of frostbite. They are due to begin the polar crossing as scheduled on March 21.

Before his latest adventure, 68-year-old Fiennes described polar exploration as a drug or addiction.

"Once you get bitten by polar records, you keep going for it," he told CNN.

First woman to cross Antarctic solo: I've never felt so alone

Fiennes, who lost five fingers to frostbite on a previous expedition and also suffered heart problems during an attempt to climb Mt Everest, was sanguine about the risks of this adventure.

"I don't think about not coming back, because I mean, more people get killed on the roads here [London] than they do in Antarctica. I mean, I had a massive heart attack reading a magazine on an airplane. You don't need to go to Antarctica to pop it."

The expedition also aims to collect data on how climate change is affecting the Antarctic icecap in winter and raise $10 million for the blindness charity Seeing is Believing.

Adventurers recreate 'greatest survival story' of the Antarctic

CNN's Becky Anderson and journalist Tom Levitt in London contributed to this report